Signors to themselves and john j



(Ne Model.) 3 Sheets Sheet l.

C. KAHLBR & L. E. BROOKES.

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(No Model.) 3 sheets-sheen 2.

G. KAHLER 8v L. E. BROUKES.

OPERATING MECHANISM POR TYPE BEDS OP CYLINDER PRINTING MACHINES.

No. 888,050. Patented Aug. 21, 1888.

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3 Sheets-Sheet 3.

wn, I HOv *Ev Q -ERWIRN MMIQ C. KAHLER 8a L. E., BROOKES.

OPERATING MEGEANISM POR TYPE BEDS 0E CYLINDER PRINTING MACHINES.

Patented Aug. 2l, 1888.

(No Model.)

Diarree @raresartnr CONRAD KAHLER AND LEONARD E. BROOKES, OF CHICAGO, ILLINOS, AS-

GNORS TO THEMSELYES AND JOHN J. KAHLER, yOF SAME PLACE.

OPERATING MECHANISM FOR TYPE-BEDS OF CYLlNDEH PRlNllNG-lilCHlNES.

SPECIFICATION foi-:ming part of Letters Patent No. 388,050, dated .en

Application filed Sepiember, 1887.

Serial No. 250,424. (No model.)

To @ZZ 1071/0712 ft may concern:

Be it known that we, Corwin Kanten and 1li-tonnen E. Bnoonns, residing at Chicago, in the county of Gool; and State of Illinois, and citizens of the United States, have invented a new and useful Improvement in Operating Mechanism for Il vpeleds of Cylinder Printing-Machines, of which the following Yis a specification, reference being` had to the accompanyin,V drawings, in which- Figure 1 is a plan View of the bed-driving mechanism and a cushioning device for the saine. Fig. 2 is an ond elevation of the beddriving` mechanism and the automatic sliding` frame of driving-gear. Fig. 3 is a plan view, partly in sectiomof a cushioning,` device formed by a peculiar and novel arrangement of springs and air-cylinders.

These improvements relate to that class of printing-presses known as dat-bed cylinderpresses,7 and particularly to the driving mechanism and cushioning,` devices forthe bed of a cylinder-press.

The object of the present invention is to overcome the objections and defects pertaining to fiat-bed cylinder-presses, and its nature consists in providingl new and novel mechanism for imparting a uniform reciprocating motion to the bod or term-carriage, and in providing a cushioning device for the bed or ferm-carriage, as hereinafter specified.

The mechanism for driving the bed or forincarriage C of the machine at a uniform rate of speed and the cushioning` devicesfor stepping and starting the bed or form-carriage C Without shock or jar at the end of its travel in either direction will now be described. The driving,r mechanism is shown in Figs. l and 2 of the drawings, and in Fig. 1 the bed or form-carriage is removed, butshoxvn in position by the dotted outline.

The bed or forni-carriage C has depending from its under side and sccnred 'thereto by a web or flange, 116, a rack, 91, having straight sides and curved ends, with which meshes a gear or toothed wheel, 93, on the upper face of which is mounted a roller or thilnble, 96.

The arrangement of the rack herein described is one by which the rack is attached directly under the bed and in a central position, and the driving-gear 93 is supported in a horizontal position and has a rotation in the proper or desired direction Vfor driving the rack and giving the bed or forni-carriage the necessary forward and back movement. The driving-gear 93 is attached to a shaft, 180, which shaft is jourualed in a sliding frame, 97, and this frame in turn is carried in a crossfrarne, 99, attached rigidly to the side frame of the machine, thus insuringr great steadiness of motion and almost perfect freedom from side or end strain upon the bed or form-carriage. This shaft 180 above the gear 93 carries the roller or thirnble 913, and to its lower end is secured a beveled gear, 119, by which the shaft is driven from a beveled drivinggear, 11S, on the end ol1 a shaft, 98, which shaft is supported at its inner end in a bearing, 117, depending from the sliding,` frame 9?, and is mounted at its outer end in a bearing, 123, on the side frame of the machine, and its outer end carries a gear or toothed Wheel, 121, which Wheel meshes into a long,` pinion, 120, mounted on a shaft supported in bearings 122, and receiving motion from asuitable drivinggear. The shaft 9S is securely held against lateral motion in the bearing 117, and is free to revolve in its bearings 117 and 123, and at the same time is free to slide cndwise in the bearing 123 with the sliding movement of the frame 97.

At each end of the rack,a11d secured to the under side of the bed C, is a seniicircular shoe, 95 and 100, and each shoe formed upon a radius e ual to the distance from the center of S the curved end of the rack to the circumference of the roller or thiinble 9G farthest away from the center of the curved end ofthe rack, and each shoe is firmly attached to the bed C at a point to be in line with the roller 96, and these shoes prevent the bed C from traveling more than the required or predetermined distance, and also assist the gear 93, through the medium of the roller 96, in turning and reversing the movement of the bed or forni-carriage G, the shoe 95 acting at one end and the shoe 100 at the other.

The under side of the bed has secured thereto, on opposite sides of the raclgshocs 77 and 78, with which ccact devices for moving,-` the slid- IOO ing frame, and these devices are shown only for one shoe, 78, it being understood, however, that similar devices are provided for eoacting with the shoe 77.

The shaft 115 is mounted in a box, 88, on the side frame of the press, and this shaft at each end has secured thereto au arm, 7 9, the upper arm having a roller, 89, mounted on its end to engage with the slice 78, and the lower arin [o having in its outer end a pin or pivot,to which is connected a rod, 80, which rod at its other end is connected to a pin or pivot on the end /of an arm, 182, secured to a shaft, 81, which shaft is supported in a box or bearing, 124, i5 from the side frame of the machine. rllhis shaft 81,at its lower end below the arm 182,1ias secured thereto a gear-wheel, 181, and to its upper end is secured an arm, 90, having in its outer end the pin or pivot, to which is connected one end of a rod, 91, the other end of which is pivotally connected between ears 92, projecting out from the sliding frame 97.

The gear-wheel 181 on the shaft 81 meshes with a similar gear-wheel, 183, on an upright shaft, 184, supported in a suitable bearing or boX, and having secured to its upper end an arm, 82, having a pin or pivot in its outer end, to which is connected one end of arod, 83, the other end of which is connected by a suitable 3o pin or pivot to a lever, 81, and tothe lever 84: is pivotally connected a guide-rod, 86, around which is a compressioirspring, 85, which abuts at its outer end against a collar, 87, firmly attachcd to the side frame of the machine, and in which collar the rod 86 slides, and, as shown, the inner end of the spring 85 abuts against a collar secured to the rod adjacent to the lever 84.

The operation of these devices is as follows:

4o Vhen the bed has arrived almost at the end of its travel in the opposite direction to that indicated by the arrow of Fig. 1, the drivinggear 93 will be on the side of the bed and at the point indicated by the dotted circle s, Fig.

1, and at this point the shoe 78 will engage the roller 89 on the lever 79 and move the lever 79 from the position indicated by the dottedlines q to that shown by the full lilies, moving the lower arm, 79, likewise, and through the rod 5o 80 turning` the arm 182 from the position indicated by the dotted lines j to the position shown by the full lines, partly rotating the shaft 81, which moves the arm 90 from the position indicated by thc dotted lines 7L to that indicated by the full lines, and this arm 90, through the connecting-rod 91 and. ears 92, moves the sliding frame 97 from the position indicated by the lower dotted lilies, Fig. 1, to the position shown by the full lines for the 6o ears 92 with the movement of the pinion 93 around the end of the rack 94C, as shown in Fig. 1 in full lines, and by thus assisting the turning of the pinion at the startingpoint through the devices just described relieves the driving-gear 93 of all strain in making the turn. The pinion or gear 93 continues its travel around the end of the rack to the point 'indicated by the upper dotted circle, t, of Fig. 1 for the reverse travel of the bed or form-carriage in the direction indicated by the arrow, and when the wheel 93 has reached this point the upper arm, 79, will have been carried by the travel of the pinion around the end of the rack to the position shown by the dottedlinesp, Fig. 1, turning the lshaft115 and thelower arm, 79, and through the connecting-rod turning the arm 182 to the position shown by thcdotted lines h, rocking the shaft 8l, and turning the arm 90 to the position shown by the dotted lines t', and through the rod 91 and Years 92 carrying the moving frame 97 to the limit of its movement in that direction and in position for the travel of the rack 9i to the other side of the gear 93, Fig. 1. The parts remain in this position until thc rack 91 has traveled in contact with the gear to its opposite end from that shown in Fig. 1 andin thedircction indicated by the arrow, Fig. 1, when the shoe 77 comes into play, and, in connection with con responding devices to those already described for coaction with the shoe 78, moves the sliding frame back to a position for the gear to be ou that side of the rack indicated by the dotted circle s, but at the opposite end from that shown in the ligure, and these movements will continue at each forward and back movement of the bed or form-carriage, and with each movement the gear 93 isassisted i n starti ng on its turn around the cud by thesliding frame 97, through the shoes 77 and 78 and their coacting devices, and on a reverse movement the arm 90 will be moved from the dotted position /11 to the dotted position 71., and the arm 182 will be moved from the dotted position k to the dotted position j. Vhen the sliding frame is in its central posi tion,as indicated by the full lines in Fig. 1, the arm 82 and the connecting-rod 83 will be on what is known as thc dead-center, having been carried there by the action 0f the gear-wheels 181 and 183,whieh partly turn the shaft 184, and in this position it will be seen that whichever way the arm 82 is moved through the medium ofthe gears 181 and 183 it will receive the full force of the compressionspring by means of the lever 84, and securely hold the sliding frame locked during either the backward or forward travel of the bed or forniearriage C, and when the arm 182 is in the position shown by the dotted linesj the arm 82 will be iu the position shown by the dotted lines Z, Fig. 1, and when the arm 182 has been carried to the dotted position k the arm 82 will be carried to the dotted position m, and from either position, Zoran, the arm 82 comes to the full-lincposition when the gear 93 is going around the extreme end of the rack.

The cushioning of the bed or form-carriage at either end of its travel is a necessary and important feature of printing-presses, and one part of our invention relates to improvements therein, and will now be described. In Fig. 1 we have shown a cushioning mechanism for IOO IIO

IIS

a press where the bed is to have a uniform speed.

At each end of the bed or form-carriage C, and secured in any suitable manner to the under side of the bed, is a shoe, 107, the shape of which is shown by the dotted lines, Fig. 1. A. lever, 101, is firmly secured to the upper end ot' an upright shaft, 101, mounted in bearings or journal-boxes attached to the frame of the machine, and this arm at its outer end has a roller or thimble, 109, mounted on a suitable pin or pivot, andthe lower end ofthe upright shaft 101 has secured thereto an arm or lever, 1.03, to the outer end of which is pivotally attached a guide -rod, 111, which enters and works within a comprcssion-spring, 1.10, the rod having a thrust collar or washer, 113, to work agztinst the cud of the sprinv. A corresponding set of devices, consisting of anarm or lever, 102, upright shal't100, roller or thimble10S, arm or lever 105, guide-rod 112, and thrust-collar 1111, is provided for the opposite side of the press, the guide-rod 112 entering and working in the opposite end of' the spring 110.

The operation is as follows: W'hen the levers 101 and 102 are in the position indicated by the dotted lines a and o,rcspcctivcly,the travel of the bed or Imm-carriage inthe direction toward these levers will cause the shoe 107 to engage with the thimbles 10S and 109 noise` lessl y and. without shoel ,aiid by such engagenient carry 4the arms forward with the travel of the bed into the position shown by the full lines, Fig. 1, and when the arms 101 and 102 are in this position the bed will be at the end of its travel, and during such movement the arms 10S and 1,05 will be carried from the position indicated by the dotted lines, Fig. '1, to the position shown bythe full lines, compressing the spring 110 between the collars 1.13 and 1.14 ou the rods 111 and 112, so that on the reverse travel of the hed the reaction of the spring will assist in returning the bed through the arms 103 and 105 and the levers 101 and 102, which are returned by the action of the spring from the position shown in `full lilies to that shown by the dotted lines, and at the same time a cushioning of the bed at the end of its movement is had from the compression of thc spring 110. The spring 110 and the coacting devices therefor .form an effectual cushion wherethe travel or speed of the press is uniform; but where a variable speed is required the spring would not be effective, and we have devised au air-cushion arrangement, which is illustrated in Fig. 3,and in which the levers 101 and 102, thimbles or rollers 108 and 109, upright shafts 101 and 100, and arms 103 and105,as in the compression-spring arrangement, are used. A rod, 131, is pivotally connected to the outer end of the arm 103,and has attached to its outer end a piston, 133, which is located and works in the main air cylinder 134, and a piston, 132, located and operating in the ai r-cylinder 131, at the opposite end, is

connected by a rod,130, with the arm 105. Attached to thc side of the main air-cylinder is a small cylinder, 135, in which is a piston, 136, and a compressionspring, 137, the pressure of which is regulated by a screwthreaded stem,128, operated by a hand-wheel, 129, the end of the stem being in contact with the cud of the sprine'. The cylinder 135 communicates with the cylinder 31 by a suitable opening, and the piston 136 is hollow, and in its side wall has a small orifice, r, which conimunicates with a pipe having on its end a porous diaphragm, 188. r1he upright shaft 101A has secured thereto an arm, 125, to which is pivoted one end ol' a connecting-rod, 139, the other end of which is attached by a pin or pivot, 113, to the end ol' a leaf-spring, 142, and the shaft 10G is connected with the spring 142 by an arm, 126, connecting-rod 1110, and pin or pivot 141. The spring 1v1-2 is supported by a suitable frame-piece, 111, and the rollers 10S and 100 are adjusted to the shoe 107 by means of adjusting-screws127 Working against the arms 125 and 120, so that by means of the spring 142 the levers 101 and 1.02 are kept in the proper position for the rollers to engage with the shoe 107.

The operation of this device is as follows: lVhen the bed-shoe 107 carries the levers 101 and 102 from the position shown in Fig. 3 to that shown by the full lines in Fig. 1, or toward the center of the machine, the upright shafts 101 and V10G will be partly rotated,turn ing` the levers 103 and 105 toward the center of the machine and causing` the pistons 132 and 133, through the conueetinguods 180 and 131, to force the air in the cylinder 131 out through the opening into thepiston 136,and from. such piston, when the press is ruiming at a slow speed, the air will pass through the orifice r and counectingpipe to the porous diaphragm 13S; but as the speed of the press increases the pistons 132 and 1353 move laster, and the air, not bei ng able to escape l'ast enough th rough the orifice r, forces the piston 13G back in the cylinder 135, closing the communication through the pipe to the diuphragnnand fornr ing in the pistou 13.1 an air-cushion to resist and retard the momentum oi the bed or formcarriage, and the quicker the movement ofthe press the more rapid the closing oi' the orifice 'r and the larger the volume of air to form the air-cushion. rPhe initial pressure at which the exhaust rivill be closed by the piston 136 is regulated by the screw 138 to give the spring 137 a greater or less amount ol" force, so that the operator can adjust thedevices to produce the requisite amount ol' cushion at each end of the bed to a nicety, and the cushioning effects can be had for variable rates of speed.

XVhat we claim as new, and desire to secure by lLetters Patent, is as follows:

1. In a llatbed press, a hed-driving mechanism consisting of a rack centrally located and attached directly to the bed or form carriage, a sliding frame carrying a single driv- IIO ing-gear meshing with said rack, rock-shaft 8l, lever 90, and rod 91, connecting said shaft and sliding frame,and means for automatically operating the frame,substantially as set forth.

2. In a flat-bed press, a cushioning device consisting of springs, fixed air-cylinders, and an automatic governor, substantially as de scribed.

3. The reciprocating bed C, provided on its under side with a rack, 94, and having at the end of the rack a curved shoe, and a shoe on one side of the rack, in combination with a pinion, 93, sliding frame 97, and an operating mechanism for moving the frame to start the pinion on its travel around the end of the rack, substantially as described.

4. The bed C, provided with the rack 94 on its under side,and having a shoe at the end of the rack and ashoe at the side thereof, pinion 93, roller 96, and sliding frame 97, in combination with the arm 79, roller 89, rock-shaft 115, and connecting-rod 80, for operating the mechanism to move the sliding frame and start the roller around the end of the rack without straining the parts, substantially as spcciied.

5. The bed C, provided with a rack, 94, on its under side, and having a shoe at the end and side of the rack, pinion 93, roller 96, and sliding frame 97, in combination with the arm 79, roller 89, rock-shaft 115, connecting-rod 80, arm 182, rock-shaft 81, arm 90, and connecting-rod 91, attached to the sliding frame for operating the sliding frame at the start of the pinion around the end of the rack, substantially as spceiiied.

6. The shoe 78, secured to the under sideof the bed C, in combination with the arms 79, roller 89, rock-shaft 115, and connecting-rod 80, for operating a mechanism to move a sliding frame carrying the driving-pinion for the bed-rack, substantially as specified.

7. The sliding frame 97, carrying the driving-pinion for a rack of a printing-press bed, in combination with the rod 91, arm 90, rockshaft 81, arm 182, and a connection between the arm 182, and operating devices moved from the travel ofthe bed for shifting the sliding frame, substantially as and for the purposes specified.

8. The shoe 78, arms 79, roller 89, rockshaft 115, and connecting-rod 80, in combination With the arm 132, lever 90, and rod 91, for starting a sliding frame carrying a driving-pinion, substantially as described.

9. The lever 84, compressionspring 85, and sliding rod 86, in combination with the arm 82 and connecting-rod 83, for locking a sliding frame carrying a driving pinion for a printing-press bed-rack, substantially as and for the purpose specified.

10. The lever 84, compression-spring 85, and sliding rod 86, in combination with the arm 82, connecting-rod 83, rock-shaft 184, and gears 181 and 183, for operating the arm 82,With the movement of a sliding frame carrying the driving-pinion of a printing-press bed-rack, substantially as and for the purposes specified.

l1. The rock-shaft 81, arm 90, and rod 91, connected with a sliding frame carrying a rack-driving pinion of a printing-press bed, in combination with the gears 181 183, rockshaft 184, arm 82, connecting-rod 83, lever 84, compression-spring 85, and sliding rod 86, for

.moving the sliding frame and locking it in position, substantially as and for the purposes set forth.

12. The shoe 78, arms 79, roller 89, rockshaft 115, connecting-rod 80, arm 182, rockshaft 81, lever 90, and connecting-rod 91, in combination with the gears 181 183, rock-shaft 184, arm 82, connecting-rod 83, lever 84,com pression-spring 85, and sliding rod 86, for moving` a sliding frame to start a driving-pinion and for locking the frame and pinion at the limit of their movements, substantially as and for the purposes specified.

13. The combination, with a reciprocating bed or form-carriage, C, provided With a rack, 94, on its under side, of a driving-pinion, 93, carried by a sliding frame, 97, devices for start ing the sliding frame at the commencement of the travel of the pinion around the end of the rack, and the arm 82, connecting-rod 83,1ockshaft 184, and gear-wheels 181 and 183, for locking the sliding frame at the limit of its movement in either direction endWise, substantially as andl'or the purpose specified.

14. The shoe 107 and arms 101 and l02,each having a roller at its outer end, in combination with the rock-shafts 104 and 10(3,and arms 103 and 105, for operating the cushioning device at the limit of the end movement of a bed or form-carriage, substantially as speciiied.

15. The cushioning device fora bed or formcarriage of a printing-press, consisting of an air-cylinder, 134, compression-pistons 132 and 133, secondary cylinder 135, and cut-off piston 13G, operated by the movement of the bed or form-carriage for cushioning purposes with variable speed, substantially as specified.

16. rIhe air-cylinder 134, pistons 132 and 133, and secondary cylinder 135, in combination with the cut-off piston 13G,compressionspring 137, ad) usting-stem 138, and devices for operating the compression-piston from the movement of a bed or form-carriage for aprintingpress, substantially as and for the purposes specified.

17. The shoe 107, arms 101 and 102, each having a roller at its outer end, rock-shafts 104 and 106, and arms 103 and 105,in combination with the connecting-rods 130 and 131, compression-pistons 132 and 133, air-cylinder 134, secondary cylinder 135,and cnt-off piston 136, for cushioning the bed or form-carrage of a printing-press at the end of its movement under variable rates of speed, substantially as specified.

18. The arms 101 and 102, each carrying a IOO IIO

IIS

IZO

ISO

roller at its outer end, rock-shafts 10Jt and 106, and arms 125 and 126, in combination with tho adjustingsorows 127, for regulating the position of the arms 101 and 102, substantially as and vfor tho purposeI specified.

19. The arms 101 and 102, each having u roiior at its outer-ond, rook-shafts 104E and 106, and arms 125 and 126, in combination with the oonneciaingrods 139 and 140 and spring 142, substantially as and for tho purpose specified.

20. The shoe 107, firms 101 and 102, euch carrying a rolor at its outer ond, rookshafts 104 and 106, und arms 125 and 126, in combination with tho connecting-rods 139 and 140 and spring 142, substantially as and for tho purposes specified.

CONRAD KAHTJER. REONARD BROOKES.

Vitnessos:

ALBERT H. ADAMS, HARRY T. JONES. 

